Container construction



June 30, 1942. o. w. WENTZ CONTAINER CONSTRUCTION Filed May 12, 1939INVENTQR 0504/? W h/f/vrz BY ATTORNEY Patented June 30, 1942 CONTAINERCONSTRUCTION Oscar W. Wentz, Long Island City, N. Y., assignor to UnitedStates Automatic Box Machinery Co. Inc., Boston, Mass., a corporation ofMassachusetts Application May 12, 1939, Serial No. 273,198

2 Claims.

This invention relates to container construction and more particularlyto a container construction of paper, cardboard, or like material.

One of the objects of this invention is to provide a simple, eflicient,economical and practical container construction made of a material likeheavy paper, cardboard, or other fibrous or cellulose or like material.Another object is to provide a container construction that will besimple and inexpensive to manufacture and well adapted to meet certainkinds of uses, such as, for example, where the container body and itsbottom should be tight but need not meet certain peculiar requirementsof liquid-tightness, and the like, of other fields of container uses.Another object is to provide a container construction particularlyadapted for handling bulk materials which may or may not be wet, alsomaterials that are plastic in consistency, like ice cream, and the like,and that will be strong and durable and sufficiently tight orliquid-proof to meet the requirements of such materials, while at thesame time maintaining simplicity and inexpensiveness of manufacture.Another object is to provide a container construction of theabove-mentioned character that will be light, strongand durable. Otherobjects will be in part obvious orin part pointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements, arrangements of parts, and in the severalsteps and relation and order of each of the same to one or more of theothers, all as will be illustratively described herein, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawing in which are shown several of the variouspossible embodiments of the mechanical features of my invention,

Figure 1 is a development or plan view ofa blank out of which thecontainer body may be formed;

Figure 2 is a perspective view showing the blank in certain stages ofthe folding operations performed on it;

Figure 3 is a side elevation of the container body; and V Figure 4 is aview as seen from the bottom in Figure 3.

Similar reference characters refer to similar parts throughout theseveral views in the drawmg.

Referring first to Figure 1, I have there shown bounded by preferablyparallel edges and 2| and end edges 22 and 23, the latter being shown asbroken away in order to indicate that the top or closure portion of thecontainer body may be made up in any appropriate or suitable form. Theblank is made of a suitable material, preferably a paper product such asheavy paper, cardboard, or other analogous or fibrous or cellulosematerial, hereinafter termed simply paper.

Intermediate of the parallel side edges 20 and 2| there extend acrossthe blank two parallel score lines 24--2628 and 25-2'l-29, and centrallythereof is outlined a bottom A by the score lines 26 and 2! and thetransverse fold or score lines 30, 3 I, the bottom A being quadrangularand illustratively square. Score lines 28, 3| and 29 thus encompass anend wall B and score lines 24, 30 and 25 encompass an end wall C, thesebeing also quadrangular and where the ultimate container is not to' betapered for nesting or like purposes, end walls B and C are preferablyrectangular or square. v

To each side of the end wall B are side wall portions E and Fencompassed within the score line 28, edge 20, and an interconnectingscore line 32, and by score line 29, edge 2|, and an interconnecting outline 33, respectively; where the container body is not to be tapered,score lines 32 and 33 are straight-line extensions of the score line 3|.

In similar manner, the end wall C has side wall extensions G and Hexcepting that the blank is out along the line 34, which, with scoreline 35 is in line with the score line 30. Also, a diagonal line ofcutting 36 extends from the upper righthand corner of the side wallportion G to the upper right-hand corner of the bottom A and in asimilar or symmetrical manner there is a line of cutting 31 extendingfrom the lower left-hand corner of the side wall portion F to the upperright-hand corner of the side wall portion I-I.

fold line 32 and 35.

Preferably, but not by way of limitation, the quadrangle formed by thetriangular flaps A and El is equal to the quadrangle of thebottom A, asis also the quadrangle formed by the triangular flaps A and H In formingthe container body, folding operations, as indicated in Figure 2, arecarried on in appropriate sequence after applying a suitable adhesive,as indicated in Figure 1, to the flaps A E side wall portion E, andflaps A and H and side wall portion H. The parts Gr, C and H as a unitmay first be folded about the fold line 39 (see Figure 2), and the sidewall portion G bent or folded to an appropriate extent about fold line24 to bring the lower edge of the Wall portion G, as viewed in Figure 2,into substantial coincidence with the fold line 26 of the bottom A,

whereupon the flap A is folded upwardly about" I and comprising afour-sided bottom, two opposed the fold line 25 against the lowerportion of the side wall portion G, thus bringing into action theadhesive carried by flap A which becomes secured to this side wallportion.

These folding operations may take place with respect to a suitable blockof a volume and shape corresponding to those of the ultimate interior ofthe container body and the next folding steps may comprise a foldingupwardly about the fold line'3! of the parts E, B and F as a unit,throughout about 90 where there is to be no taper in the container body;the side wall portion E is thereupon folded about score line 28 to bringits adhesive-bea'ring face against the outer face of part G and theouter face of flap A which had already been adhesively secured to'partG, flap E projecting downwardly. In a similar manner side wall portion'Fis folded about score line 29 to bring its left-hand edge, as seen inFigure 1, into coincidence with the score line 2'! of the bottom A, thenflap A is folded upwardly about score line 2'! to bring itsadhesive-bearing face against the outer face of portion F. Side wallportion H is then folded about score line 25 to bring itsadhesive-bearing face against the outer faces of the now overlappedparts A and F, leaving flap H projecting downwardly, like flap EThereupon, flaps E and H are folded about their respective fold lines 32and 35 up against the under face of the bottom A to which they becomesecured through the adhesive which they carry and against which they arelaid and secured to appear as shown in Figure 4 in which it will be seenthat, assuming, as in the preferred case, that the flaps areappropriately dimensioned with respect to the bottom A, the twotriangular flaps E and H completely cover over the under face of thebottom A.

Thus, the bottom A- becomes reinforced in several ways. For example, itmay thus be given two thicknesses or two plies of the material, thusalso to resist wear and tear better, but also, because the fiaps E and Hare integral with the side wall portions E and H, respectively, thelatter parts take part in carrying the load or strain imposed upon thebottom A itself. Furthermore, this construction also reinforces thejunction of the bottom A-along its score lines or edges 25 andlll to thecomposite side walls GE- and HF, between the portions of which theupwardly extending flaps A and A (Figures 2 and 3) extend and aresecured, and thus, if desired, flaps A and A may be made smaller andalso the parts of which these composite side walls are made mayindividually be made smaller or given shapes to eifect additional savingin paper or raw materials. But flaps A A become securely anchoredbetween the two last of the respective side walls G-E, and H-F and thusaid the flap E and F respectively, in transmitting the load on thebottom to the respective side walls.

sides'of which are extended to form opposed end walls, the latter eachhaving lateral extensions, juxtaposed lateral extensions beingoverlapped and adhesively secured together thereby to form opposed sidewalls, said bottom having flap extensions one at each of its tworemaining sides and each flap extension being joined to said bottomthroughout the length of the said side of the bottom, whereby said tworemaining bottom sides form axes about which said flap extensions may berespectively folded, said flap extensions being folded about theirrespective said axes upwardly and respectively received in between andadhesively secured to the overlapped lateral extensions of said two sidewalls, the latter having flap extensions which are respectivelycomplements to said two flap extensions of said bottom and whichcomplement each other when folded respectively about the aforesaid axesand against said bottom, together matching the area of the latter, saidside wall flap extensions being so folded against said bottom andadhesively secured to said bottom to cover over the latter and reinforceit throughout its area.

2. A paper container made of a single sheet and comprising a four-sidedbottom, two opposed sides of which are extended to form opposed endwalls, the latter each having lateral extensions, juxtaposed lateralextensions being overlapped and adhesively secured together thereby toform opposed side walls, said bottom having flap extensions one at eachof its two remaining sides and each flap extension being joined to saidbottom throughout the length of the said side of the bottom, wherebysaid two remaining bottom sides form axes about which said flapextensions may be respectively folded, said flap extensions being foldedabout their respectiv said axes upwardl and respectively received inbetween and adhesively secured to the overlapped lateral extensions ofsaid two side walls, the outermost of each of said overlapped lateralextensions that form said two side walls having downwardly directed flapextensions which, where they respectively join the outermostof saidoverlapped lateral extensions, are of dimensions at least equalrespectively to the lengths of said two remaining sides of said bottomand are folded about said respective axes against and adhesively securedto the under face of the bottom, whereby the two angles formed by thebottom and said two side walls are, throughout their respective 'apexeswhich are formed by said axes, at least double-walled, said two sidewall flap extensions being together of an area completely covering oversaid bottom when adhesively'secured thereto, thereby to make said bottomat least double-walled.

OSCAR W; WENTZ.

